Been a while. Got round to doing some more work on the engine recently. Since my last post I've changed the waterpump kit and replaced some of the old and cracked fuel/breather hoses. It's running much better now but still isn't perfect. It's great to start with but then after about 5minutes and the engine's warm, it struggles to rev properly.
Apologies for the shocking quality but you can just make out then when I go to increase the revs, it's almost stalling as if there is a lack of fuel being supplied to the engine.
Any thoughts would be much appreciated.