The problem is most noticible on hot days over 85 degrees. When the engine is hot and is shut off it won't restart but you can tell that it is trying to fire but just won't catch and run. I am going to start with a tune up since the dist cap looks a little bad. I have heard that the lp fuel lock offs will stick on these models when hot and I would like to know if there is any update to the lock off to fix this problem. I know that you can take out the plunger to test. This but I am never around when the unit acts up. If you let it sit anywhere from 15 minutes to up to a few hours it will start up as normal. If you have seen this or have any ideas please share them. Thank you