JDH Fuel Line/Carb problems

Good evening.

I am restoring an old H. I sent my Carb to be rebuilt to a Carb shop. His instructions said you have to install an in-line fuel filter in order for the warranty to be good. I cut out a section on the OEM steel fuel line and installed a simple filter with rubber hose ends and clamps in the middle of the steel line. (copy attached). After having the tractor running several times over a period of 30 days, one day it flooded the cylinders and crankcase with gas. Before it flooded, it had started and when it started to die, I choked it heavily. Looking back, perhaps that caused it to flood. I sent the carb back to the shop and he said that I didn't have enough drop in the fuel line and that the filter needed to be up under the tank. He said nothing was wrong with the carb so he sent it back after charging me another fee. My questions are:
1. Since there is only a few inches of drop from the sediment bowl to the carb; how do you install a fuel line with an in-line filter that goes straight down from the tank?
2. Now that I have the carb back, I can't seem to get fuel to run through my patched up steel line with the filter. Should I go back to a regular line without a filter? Can I use copper?

Thank you.

Does the fuel flow freely from the tank before the filter? I still use several letter series tractors in the field, none have anything except the sediment bowl and screen.

The filter would NOT cause the carb to run over, issue inside carb.

No idea which carb shop you used but chalk it up to experience in the school of hard knocks. He is an idiot for telling you to cut the line and install an inline filter. A good sediment bowl assembly will have a fine screen filter at the top.

Use a steel or copper/nickel brake line to make a new one.

I agree with M-Man.
That guy is an idiot to tell you to put a filter in the line.
This is my working 42 H that I replaced the fuel line on.
Bought a fuel bowl for an 8N Ford and adapted a piece of brake line to go from the bowl to the carb.
Been working great for several years.
The 8N bowl has 2 screens, one up in the tank and the one in the bowl.
I always turn the gas off when I park the tractor and let the carb run dry.
Richard in NW SC who believes in keeping these tractors working

I also am not a fan of those types of filters on gravity flows. A good sediment bulb does a good job.

I totally agree with everyone. Maybe the float stuck open in the carb to cause your flooding problem or maybe it needs adjusted.

Yes float/valve is your problem. I wouldn't ruin any of my lines
installing a filter. The screen in the bowl and strainer in the carb
protected them for years. Is your cutoff working?