Ok so we got a 1992 Polaris trail boss 250 2X4 it had been sitting for a year or so. It started fine but it leaked like crazy. We replaced the fuel line, intake boot from carb to cylinder and did a carb rebuild kit for it and used compressed air and carb cleaner to blow out the carb. Everything was set to factory spec, throttle needle in 3rd slot, 1 turn out on idle mixture, float adjusted to parallel to gasket surface 145 main jet etc. Choke cable and oil cable also adjusted to factory. Now it is harder to start but when started it idles fine but when you punch the throttle it dies or just barely stays alive. I can easily roll into the throttle up to wot just fine but any aggressive movement on the throttle and it bogs down or dies. It also is slow to return to idle rpms so I think it's lean. I've sprayed starting fluid around everything when idling and had no changes in rpms so I don't think I have a leak. I also put duct tape over half of the intake opening which helped it but it still wouldn't rev up from idle. Compression is right at 100psi and also has a new spark plug with correct gap. also have good fuel flow from fuel line at carb when fuel is turned on. What am I missing here?