i've got a 93 xlt/sks with a 580, all stock. this thing stuggles to catch rpm until about 5000rpm, then the primary slaps in at about 6000,. then it runs like a champ. BUT it runs at 9200 rpm. STOCK! the clutching is all set un per the book, and all i did was back the tension off the secondary spring, that brought it down to 9000. i take it the clutches won't work right if the engine isn't running right(just like a car if the engine runs like crap the tranny won't shift right). with the aifbox off and rev it up u can see it sputter fuel vapor out the pto cyl. pretty good, and a little out the middle. then at 5000 is ok.compression is all good, and i used a degree wheel to make sure the crank was in phase(all within 2 degrees)i read needles and seats could cause this? kinda floods it but not enough to kill it?any ideas?