Are you still running the EXUP or has it been removed?

No the exup has been removes and it has a very loud straight through muffler!! Thanks for your offer about using the workshop!

Sounds like it's a fuelling issue then. Have you been on a Dyno run? For the sake of £20, it can pinpoint the problem. Better than hours of fecking about surely?

Cool - so you've scrubbed a bit of the tyres warm them up before you push them mind.

I recken it's just the carburation and it's only at 2800-3000, so I guess you can ride round it for now

Yes I can ride around it, just got a bit worse, but since I got the carbs I've never looked at them so I do have a few jobs to do and yes money permitting it will go on a dyno but I would rather the valves be checked. Dyno runs are not that cheap around here £50. After having a ride today I feel better but if any more carbs come up might be tempted.
Thanks Again

I think the difference now is I can be doing 50 to 60 and throttle back to cruise the throttle is in the position where it runs poor so you are aware that the engine is not happy.
Mark

I don't think it's worth buying another set of carbs - just give them a clean and have them set up, they sound like all they need is a bit of adjustment

What you mean balanced or dyno?

MarkT wrote:What you mean balanced or dyno?

Both if you're not running in standard trim

I think I've posted this before, but I couldn't find it-

A quick and dirty carb balance (the council balance)

I used 0.6mm MIG wire, other wire sizes are available.

Do the left side first (I'm assuming a generic IL4 lump but I suppose it'd work for most carb setups). You need to be able to move the slides with your finger so take any bellmouths off that might be there. You need a couple of lengths of wire long enough to reach under the carb butterflies, with enough left over to put a 90 degree bend in (so it can't drop down through the carb!)- about 150mm should do.

Crack the throttle and slide the wires under the butterflies in the carbs. One wire will be gripped tight and the other will be slightly loose if your carbs are as out as mine were. Adjust the linkage between the two left carbs until both bits of wire are held by the butterflies.

Repeat the step for the right side carbs.

To balance the two pairs of carbs, crack the throttle again and put one piece of wire under the butterflies in carbs 1 and 3. Again, if your carbs are as bad as mine were, there'll be a definite difference in how tightly the wires are gripped by the butterflies. Use the main adjuster to balance the two pairs of carbs to each other.

It works, it's quick and dirty and is better than not doing it