My recently-acquired TX2 continues to surprise. From time to time the tonearm  "struggles" to return after reaching the end of a record. I hear a prominent noise as the tonearm begins a slower than normal return and then -- generally -- once it's around halfway home the noise goes away and it completes the journey as desired. I'm hoping the noise is just a slipping servo mechanism belt, but time will tell. I have a new belt on order. 

If anybody has additional ideas, please let me know. Thanks!