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I recently purchased a standard 10:1 Crayford for my 8" Dob. The reputable telescope shop where I purchased it told me that they no longer sold the low profile version as they had had some issues with it. I was told because the bearings were closer together in the low profile version that the drawtube was prone to a little sideways flex.
It is a good job I didn't get a low profile focuser as the standard size one I bought actually doesn't have enough OUTWARD travel for my eyepieces. It seems to be OK for my DSI camera though. I haven't had chance to test it with the Toucam yet due to all the bad weather in Qld lately.
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