Yamaha banshee wont start
I have a 2000 Yamaha banshee 350. Since I purchased it 3 years ago, it's started up first or second kick every time. Just recently I put new gas in it, cleaned the air filter, and (attempted to) replace the spark plugs. I started first by replacing the gas. Afterwards it started again on the first kick and ran fine. Then I tried to replace the spark plugs, realized that I bought the wrong ones, and put the old spark plugs back in. The first kick it started, and then died (first time this has ever happened). Then I started it again, and the same thing happened. After a couple more attempts I got the quad to idle again and everything seemed okay. Finally, I then took off the air filter, cleaned, and re-oiled it (I followed all of the k&n cleaning instructions very carefully), but when I put the air filter back on the next day I couldn't get it to start. I checked the plugs and there's still spark in both of them. When I try to bump start it it bogs for a couple seconds, then dies.
Any ideas?
I'd also like to add that the screw inside the spark plug boot popped out of the boot when I took the plug out of the left cylinder. I simply threaded it back into the boot, but could this still be an issue? Again, it is still getting spark when I crank it.