thanks for that timo. will let you all know how i get on

thanks guys it is the powervalve.it is not stuck as it moves ok when i took exhaust off,and it only moves now and then so i guess it is the electronics

i have just got my bike back on the roadafter it sitting for a year in my garage.1998AR
my problem is this.
sometimes my bike has no top end powerband and the exhaust note is high pitched tinney sound but with grunt from low revs then after i have stopped and turned off ignition and started again ...

yes soapy water but only use the bubbles,not the water lets you position it properly by sliding it around,until you are happy with the position then squeedjey out any bubbles

i have just bought a dep full system for my AR,got the front pipe on
,but the tail pipe does not line up with the bracket on the frame.is this normal ?do i need to make a new bracket.also what do i use to connect the tail pipe to the front pipe as the original fastner does not tighten enough.

any ideas? my mate has bought a standard mk1 crm,and it has more power than my standard ar,especially when going up steep hills.
both bikes have the same gearing.
if my ar is meant to have more power please help as the bike runs ok

leisure trail have them so do trm but they are expensive.
for less than double the price you can get new plastics with graphics already on them