[mldee (Mike)]

I've decided to ditch the GSO Crayford focuser on the rc8 due to unreliable autofocus issues.

TS show two suitable rack and pinion units, TSFOCR25 and TSFOCR25S.
The 25 does 6kg and teflon bearings, the 25S does 4kg and ball bearings.

Apart from that, they seem amost identical, but the 25S is 40 euros more. Perhaps a case of "yer gets what yer pays for".

Any advice?