As far as I am aware you can't get a gasket "kit" for the TTR so you will probably have to buy each gasket individually but, are you sure that all the leaks are from gaskets and not seals?
The usual suspect is the blanking plug in the de-compressor hole. When it starts to weep the oil gets all over the engine.
Hi Brian, yes a leak from the de-compressor shaft, have new oil seal on the way, also from either the nearside cover or at worst the final drive shaft have one from oil pipe over clutch housing, all very minor but would like them done. Bill