I seem to have a bit of a problem with the NSR.
The bike runs and start's fine
, with very good performance, but after a while it loses power throughout the rev range. 
This can occur from 1/2 hour after start up onward's, sometimes switching the bike off and restarting can restore power for a while.
The plug's are a good colour.
Tonight I pulled the carb's, to check what jetting the bike has and check for internal blockages. All seem's fine.
Main's; 128.
Power; 55, both carb's.
Slow; 38.
Pilot; 1 and 1/3 turn out.
I believe stock Power jet's should be 70/75 is this correct?, where can I get them and how do you remove the flaming thing's that ers in
, (tried (gently) a pair of mole grip's(??? ). They're going nowhere!!!).
On inspecting the TPS connector, some corrosion was evident on the terminal's, I tried a multimetre and struggled to get reading's, after a bit of a cleanup I could get ascending and descending resistance reading's when opening the throttle.
I'm hoping this cure's my problem (well one of em!
) sound likely?
Is any info available to check/set the TPS?
Bike is running stock exhaust's with wire splice (which didn't seem to make much difference!).
Any advice or opinion's greatly appreciated.
Regard's Phil
TRX 850
Honda 400/4
NSR 250 MC21