Bought a 2007 with 12k miles and a base gasket leak. After much contemplation, I've decided I'm too broke to go to a mechanic and I've got no choice but to take it head on myself! I've got little to no mechanical experience but I think if I take my time and ask questions when I'm confused, I should be ok. I'll be replacing my stock sprockets with 14/47 and putting in an x-ring chain as well. Is there any other recommended maintenance, or parts to replace while I've got the engine disassembled?