It does happens on older scopes
This is a common problem with older, inexpensive scopes. The internal lubricant loses their solvents and become gummy. I have found that if you can get them to move, you will be alright. You might try a little heat from a hair drier but I would not go any hotter than this. Just go for warm, not hot !!
I have only seen this problem on much older, cheap scopes that have sat too long, on one setting...
Be Safe !!!
'Fundamental truths' are easy to recognize because they are verified daily through simple observation and thus, require no testing.
Last edited by Pahoo; December 9, 2012 at 11:44 AM.