I know how you feel buddy, mines not been well for sometime, boggy on take off, boggy acceleration, by time it feels right in the revs its time to go up a gear.
Biteing the bullet and doing a big service,
Dizzy cap, points, spark plugs, Carby Kit, fuel filter, all the manifold gaskets and carby ones... if that fails then ill join ya with the cliff dive :wink: