Confused

[Kawksam]

still having problem with the Kh, got points done today, oil pump still set abit high, spark plug nice chocolate brown

Found the exhaust has had the baffle tube removed but still got normal air filter.

still hesitant at around 6,000 - 7,000m rpm and only going 40 is but struggles up hills badly and feels like misfiring at high rpm.

would decoking help or any other ideas.

my best bet is timing is out.

[Pete.]

Might be coked up exhaust. Find a secluded spot, loosen off the downpipe and see if it pulls better with the pipe off. Don't go too far, you'll know right away if it's the exhaust choking it.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Vincent]

What's the mileage? Could well need a decoke, esp if the oil pump has been set too high for a while. It's easy enough to remove the head and check but you'll need a new head gasket and a torque wrench to put it back.
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Space Is Deep

[Kawksam]

Going to get the timing set right then see if it's the exhaust coked up,