reving

Ok everyone I need some help. I have a 06 636 and never had this problem before till after I got the bike back from the shop. Took it in for an oil change new plugs and a coolant flush. Got It back and now when I hit the rev limit the bike kills itself never had this problem before till now. Was...

I have a 2004 zx6 (636) that im having throttle and revving issues with!!! I start it up and I can redline it 2 or 3 times and then it wont even rev over 10 thousand RPMs and it sounds like shit!! But if I turn the key off and restart the bike its the same process all over agian!!! PLEASE HELP...