85 300TDT wont start when warm

[86_MR2]

Hi so I recently got a 85 300TDT and have been fixing it up and so far it was running well and starting just fine. A couple weeks ago it was hard to start after i had driven it for a whiile then parked, once i got home i was unable to get it to start at all, just cranks and cranks. The next morning you can walk right out and start it no issue, even when parked with the nose up. I have done a bunch of different things to the car and it behaves exactly the same way. So far to fix this i have cleaned the tank strainer, passed some weedwhacker string through the fuel lines, changed both filters, valve adjustment (which made amazing difference), changed all hoses, cleaned all surfaces and replaced crush washers, drove around with both the gas cap and the vacuum hose to the shut off, also tried blowing into the shutoff in case it was sticking. I have my lift pump off and am letting it soak in carb cleaner because im rebuilding it in case one of the check valves is no good. Any thoughts on what could be going on ? really kills the useability of the car not being able to shut it off.