89kdx200rdr said:
hows a heli-coil better than new?
I think I know what he means: I also ride road cycles (the pedalling kind :) ) Whenever I build a new bike from components, one of the standard procedures is to "Chase" the threads for the bottom bracket in the frame (the large threads that locate the pedal crank spindle/bearings)
The threads on the frame as they come from the factory are typically one pass rough cut, full of burrs and a danger for cross threading.
The threads on a KDX frame for those two problem screws might very well be just as "one-pass" rough cut (extra finishing on the frame results in time and extra cost) It would DEFINITELY explain why they are so difficult for so many to remove the first time.
With a helicoil or a quality tap job, you're basically chasing the threads and finishing them, perhaps making them less susceptible to galling when you tighten a screw in them (the reason I suspect the screws are so difficult to remove) and if I can get a screw in there and take it out whenever I want, well that's better than new for me! :)
Other screws on the frame don't seem to be as difficult only because the two frame guard screws are apparently the only phillips heads and notoriously hard to get good torque on... The other hex bolts are not as bad only because you can get much more torque on them than a phillips...
I could be far from correct on all this, but I had some time for typing as I am soaking a carb in cleaner right now and waiting for it (I'm on the garage computer :) )
Feanor