504 International, won't start

Ok, I was told by friends that as soon as a bought a Skid Steer that my tractor would stop running...lol I guess they were right. Here's the deal and any input would be much appreciated

I have a 504 that has always started good, but will only start on very low idle, but none the less would still start even in the coldest weather, until this winter. I have spark to the plugs, they seem to be wet (flooding?) I can crank it over and it will try to start(maybe 1-2 seconds) then kill and crank and crank and crank and nothing. Gas has always leaked out the bottom to the point that I always shut it off at the tank, but seems to be worse now, it is a steady 20-30 drips per minute out the round (filter?) on the bottom of the carburetor.

Also the tractor ran a few weeks ago when I was getting the snow blower on it for winter but did not want to throttle up when I gave it the gas. Took the carb off at that time and cleaned it. started and throttled up fine, now 2 weeks later it will not start. Tried starting fluid, nothing, There is spark to the plugs and gas was drained out and replaced with new. Replaced the roter and cap this spring along with new plug wires and coil...

Ideas what I need to look for next? going to try and reset the float in the morning and see if that helps...

Thanks

Change the plugs to a set that is either new, or not wet/contaminated. Some times fuel will short a set of plugs. If the fuel is leaking out the overflow, the needle and seat are not doing their job. Attend to that first, then different plugs. Setting the plugs in a row on a metal bench and heating them till the ground electrode is very hot, and they burn off material, then putting them in warm is also good for the issue. JimN

Wet plugs = gas fouled plug replace or clean them. As far as the carb problem you missed something or did something wrong when you had it open. The float has to be set just right and the needle seat has to be good and tight and the float has to be good. So in other words for one of those reason the float/needle are not doing there job as they should and you need to fix that first
Hobby farm

Check that float to make sure there's no hole in it and it may have some gas in it causing it to sink. Shake it gently. Hal

Might need to clean the air filter if it's been sitting out. Water can get in and clog it up.

my dad used to have a ford truck, every 2 or 3 years like clock work the it would start running real rich and smoke like a diesel. everytime we took the carb apart, and cleanded it it look like some one put a handfull of dirt in the carb. we never did find out why that happend, but maybee its something simalar on you 504

Just checking back in! Took the air filter (oil bath)apart because there seem to be alot of oil on the side of the motor that I never had before in that area. Plump full of ICE, the oil bath, the wire mesh filter and going up into the pipe even.... got this thawed out with the nipco and she fired right up. Also adjusted the float and this stopped the gas running out of the carb.

Thanks for the help all... Have a great Christmas