AK: I'm not sure what you mean by "non-scale gear that's more reliable". I'm guessing that you are refering to the struts. If so, I think most will agree that as far as Robart's RoboStruts, we have no issues. They are great looking and functional (altho rather pricey). They can be installed on other makes of landing gear. I even installed them on CJs, but with a lot of enginneering. Those who saw the Corsair at the Wing Mfg. booth (at Toledo) may have noticed that RoboStruts were installed on the $25 mechanical retracts on that aircraft. If the KMPs become available (for sale), the ideal setup could become those retracts with RoboStruts installed on them. The main thing to remeber when using RoboStruts: don't be skimpy with the set screws, and be sure to file flat spots, but not too deep. The flat spots need to be just deep enough to provide a small area for the set screws to grab. File too much away and you weaken the wire strut.
And about contacting Robart to express my dissatisfaction with the 615s: I have done so, by e-mail, and in person (at Toledo). I know of other people that have done the same. I have also talked to CJ about their retracts, and both groups do not seem at all interested in our complaints, and/ or making an attempt to resolve the issues by making product improvements. This should be a very clear challenge to anybody who'll listen: WE WANT GOOD ROTATING RETRACTS, and you are not providing them.
I would like to give the KMPs a try.