Sticky Lifter solution(s)??

[SOP8920@Siena.edu]

Hi folks,
   I've been noticing my sticky lifter clackty noise a bit more recently. I
understand that a few people have had sucess with various lubricants. However,
masking the problem may not be the proper solution. 
   How difficult is the procedure of replacing the sticking valves? Is this
procedure one that a novice shouldn't attempt? What happens if I ignore the
problem, i.e. what damage could occur to the head and block? 
   If anybody has any advise, I would appreciate it! Information on lubricant
sucess/failure, repair procedure, and cost for parts/labor would be especially
helpful. Thanks.
                               -Osman Parvez
                                89 200q (155K miles)
                                Siena College
                                Albany NY

P.S. The lifter noise is no longer eliminated after 10-15 min of warm-up. 
I've been told that a little lifter noise is normal upon start-up to 15 minutes
of warm up. I believe my Q is starting to go beyond this margin.