Any problem with working on the valves for a cylinder when it's not TDC?

I'll have to take a trip to several auto part stores today and see what they got for valve spring compressors.

Here's the spring compressor the guy is using in the tutorial. Apparently it works fine for him but others have said it's too fat.



And just for the record, here's the tutorial I'm following along: http://www.team-integra.net/forum/di...g+Common+Topic