Mk Retracts are difficult to find, but they do show up from time to time. I wish I had enough extra sets to help you out but don't. If you want to stay with a mechanical retract, I would suggest going with Dave Browns/Southern R/C. They are very good quality, are available today, and hold up very well. I use both types and when my MKs run out, then I'll be buying Dave Browns. The other guys suggestions of Spring Airs are also good since they are good quality and much easier to install. I don't have a link for Dave Brown's handy but just google it and I'm sure it will show up.


Dan
Carolina Custom Aircraft