starting issues

Hi guys I recently picked up an older 044 which was running okay for a while until I started tuning the carburetor. I was trying to get the four stroking sound but couldn't get it quite right and now it's just won't turn over at all. After sitting a couple days afterwards, it just won't fire...

Ok, so I got me a homelite super ez auto I have been messing with. It starts up pretty good cold. Cuts good, doesn't die on the idle, cuts fine. If you shut her down and turn her right back on, she'll start on the first yank. But if you let it sit maybe 5 min and try to start it back, it has to...