Speedplay Frog problem: cleats, shoes, pedals, screws?
I've been riding with Speedplay Frogs for a little over two years, ~7k miles per year. (I ride a road bike, but I figured more mountain bikers use Frogs so I'm asking here.) Just recently I've been experiencing two distinct problems, wondering if anyone else has encountered these & if so whether you found a solution:
1) The screws holding the cleats to my shoes (Specialized Body Geometry MTB) have started coming loose with alarming regularity. Not so loose that they rattle around or anything, but just loose enough that they twist a bit, causing my inner heel to strike the crankarm. I have to re-position the cleat & tighten down the screws at least every two or three rides now.
Should I just slather the screw threads with Loctite Threadlocker Blue & hog 'em down some more? Or are my screws toast? Cleats toast? Soles of my shoes toast? These are the same shoes for these entire two years; the cleats & screws are maybe 18 months old.
2) This one's a little harder to describe, or to document authoritatively, but -- it seems as if my foot is tilting or rolling when I stand out of the saddle. (I guess in Flight Dynamics parlance "Roll" is the correct term: they're rotating along an axis that passes from the toe to the heel, parallel to the direction the bike is travelling.) I can't swear this is really happening, because it's subtle. But it's definitely a new sensation.
So I'm wondering, are my cleats (or pedals) worn, allowing this rolling motion? Are the formerly very stiff soles (or insoles?) of my shoes compromised due to age/wear&tear, allowing this rolling motion? Or did my feet always roll and I'm only just now becoming sensetive to this subtle sensation?
Any suggestions would be greatly appreciated.