I've got a Ryobi Lawn Hornet MK2, RLH 1100. I'd really like to see what parts are interchangeable, as I bought a replacement clutch from the shop which was different to the original as it had 2 clutch shoes but with 2 springs, but it didn't seem to last very long as one of the shoes broke. The trimmer head has fallen off again (circlip groove worn), so I need a trimmer head shaft, or maybe I'll get a whole trimmer head assy. Thanks for any replies. Regards Derek