I can't yet speak for how the 120/140 size MK mounts perform. However I have used the smaller MK mounts in pattern planes with both YS63's and YS90/110's and have had no problems whatsoever - despite the scare stories which I have read on the net!

I have just competed the Mk 1 MK Topstar which I purchased from Probuild towards the end of last year. The kit was a delight to build and lived up to MK's well deserved reputation for top quality. The model is fitted with a YS140 Dingo on MK mounts. Although I have yet to run the engine I am not expecting any major problems. MK are sticklers for detail and are not the sort of company to market a product if it has not been well tested and researched.

Robert Wasson
Middlesbrough