MintSauce, You can safely loosen the lock screws without effecting the collimation. These should NOT BE OVERLY TIGHT anyway, just nipped. Check article in S&S.
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http://skyandspace.com/printable/how...ticle_790.asp*
HTH.
Just the facts m'am.
ps. similar/same way as Geoff's.
pps. A Cheshire is an easy, cheap aid.