Tach drive puller/Pam non-stick questions

Good day - a few posts here about making a tach drive puller and the best idea I thought I read was using the base of a sparkplug to create the puller.
1) But there was no information on what sparkplug has a 3/4-20 UNEF (extra fine) thread - tried a search for that thread specification and no luck...
Any help out there...? Which sparkplug do I look for?
2) About to re-install the RPS34 valve body on the tractor (970) and noting how hard it was to get off (I damaged the aluminum to get it loose) - Has anyone used Pam non-stick on a gasket or gasket surface to ease removal of that piece later...? Just thought of it... just checking if I am crazy or has anyone done this to help get off an assembly at a later date... not sure if it will promote leakage or help with future disassembly... the top of the transmission only has ports where oil passes through and a huge surface where the gasket stuck solid for me.
Any comments?
I am tempted to try it if no one has just to pass on the results... in my case if the RPS34 valve body needs tweaking or another clean due to the system contamination (even though oil is changed and filter relief valves now installed) - the tiniest bit of gunk is bad for those spools!...
Let me know if you have any info on plug or comments of getting things apart after in an easier manner. Brian Case farm kid

the 3/4 20 tap is available but did not find a bolt listed anywhere. tap is 4 1/2" long. should be usuable. don't know how a sparkplug could have that thread. not ever seen one with fine thread. The pam non stick is organic, not something i'd use. I would try a gasket product commonly refered to as elephant snot. years later the parts come apart clean with a rubber band residue easy to get off.

For a tach drive puller I found a 3/4 bolt with the proper thread and drilled the end to fit over the stub in the drive, I drilled the hex side and tapped it for the thread of my slide hammer. I did mine in a lathe, but it should be easy enough to do with a drill press or hand drill.

Good day, Thank you for your reply. Yep - that thread will be a challenge... would like more info on Elephant Snot.. comes up as a graffiti cleaner - not a gasket maker. If you can follow up with some info that'd be great. Have a great day! Brian Case farm kid

back in the day...............i was rebuilding vw engines (air cooled). the block was two case halves made of aluminum and from the factory had no gasket but had to have something. the engines in some cases would have oil temps in or above 250 degrees. the only product i ever used and most others i knew used. http://gasgacinch.com/ for many years this product was on the shelf of every autoparts store i went in. there are other similar products but i don't know how well they work or later removeability. happy holidays................chuck.

Yes , That's called Gasgacinch , my favorite gasket goo. It's made by Porter Mfg & Supply in S.El Monte , Ca.

Good day, Thank you for the product name. Gotta source here in Winnipeg... but it is coming up as either a Gascacinch product or an Edelbrock product (assume it is the same product with Edelbrock paying to have their name on the can). Thanks a million for that! Have a great weekend. Brian Case farm kid

My understanding is Edelbrock (performace intakes) developed gasgacinch (several different products) for automotive uses. They are locaterd in socal as is the manafacturer Dale mentions. All fits! Price of this can be unbeleivable ie. walmart lists a 4oz. can for $32!!!!! There is a seller on ebay sells 8oz.can $12.49 free shipping. That's as cheap as i have found it anywhere. chuck.