What do you mean the saddles slip when you change strings? Mine slip because I removed the springs that keep pressure on them and in place.

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Tune Low, Play Hard & Floor it!

umm, Jeffo,
What do you mean by "The height of the saddles keep on slipping and won't stay still"??
Are you referring to the 2 micro-screws in each saddle? (Not the intonation screw having the spring)
IF so, it sounds like the screw or the saddle may be stripped.

Anyway, you already have this issue resolved. I was just inquiring to make sure I was understanding this issue right.

Oh ok, totally different problem. Sounds like the holes are too big... bad machining.

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Tune Low, Play Hard & Floor it!

Did you try using Lock-Tite on the little saddle height adjustment screws? If that works it could save the price of new saddles.

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'65 Strat,65 Mustang,65 Jaguar,4 more Strats,3 vintage Vox guitars,5 Vox amps,'69 Bassman with a '68 2-15 Bassman cab,36 guitars total-15asst'd amps total,2 vintage '60s Hammond organs & a myriad of effects-with a few rare vintage ones.