I need to look at the Chainline - it is riding fine, but when I took a look last night, it looked like it was a bit off towards the front - I have a feeling that my cranks might not be on quite as tight as they could/should be.

I'll measure everything and if its really out-of-line, then I'll take it over to the LBS and ask them to take the professional tools (and a workstand) to it to get it right.