To all that has a Theta Miles CD player

I’ve noticed lately that my Miles is skipping the first note or music measure on about every third song. It’s not consistent, but it’s still there. Since I’m using it as only a transport, it has to be the optics system.  Has anyone else experienced this?
Have an electronics repair shop check it out. Could be a simple fix, or a laser assembly cleaning. When was the last time you had your player tuned up?

Long shot … on older cd players the lubricant on the guide rails can dry and harden up in spots making it difficult for the laser sled to pass easily/normally over that spot  (hardened spot) on the guide rail  

It causes the sled to stall momentarily at that spot and lose lock with the data stream on the disc … thus causing the skipping … when the sled drives past the hardened lubricant  spot it moves normally and regains lock with the CD and normal playing continues  

you notice that every disc skips at the same spot … cleaning  and lubricating  the guide rails should correct the problem 

Don't jump out of the basement window just yet

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I just had my CAL Delta tuned up at Deltronics in Chicago. They cleaned the laser assembly and lubricated the sled, belts and rollers. Makes a huge improvement in SQ. 
Thanks to all who have replied.  I've had this problem for years, but only with certain DAC's-probably should have mentioned that.  I'm not sure why 2 out of 3 DAC's revealed the problem, but the other did not.  When I first discovered the problem, I thought I had a bad DAC, but when I recently auditioned the Premate Plus by DEQX and it did the same thing, I knew it must be the transport.  I ran an old lens cleaner I found in my CD rack, but it didn't help.  I realize the 6 second cleaner of little soft bristles, probably isn't the best and I even hesitated thinking the cleaner may do more harm than help.  Even though it hasn't become worse over the years, maybe it's time to install a new laser.  Pretty sure I can get one through Pioneer. Missing a single note, every now and then isn't a big deal.