We have two newer Pa traps, they are about 4 years old. On one trap the wheel that controls the doubles froze first. After spraying it with break cleaner and spinning it by hand it now moves freely. The other wheel that controls the singles froze today! After spraying it with gun scrubber and spinning it, it spins but not freely. Taking the wheels off is a pain since one has to measure from the king pin for the proper placement. Is it time for new wheels or is there a simple fix? It took me at least 20 minutes of trying to get the one wheels to spin before it did! Are replacement wheels available, bearings maybe shot. It seems like the dust from these new targets liquefies then hardens and jams every thing up.