Hi all thinking of doing a full rebuild on the engine of my 1500 trike have changed the cambelts and tensioners, oil and plugs, but it stil sounds a bit ropey keep getting a knocking noise on tickover and a whiney sound when accelerating, the knocking or rattle sound seems to stop sometimes when you pull the clutch in similar to a car clutch release bearing any body ever done a rebuild is it easy or not are there any hard bits clutch looks a bit naughty?? any comments appreciated thanks Brian