The time has come - after a lot of years - to re-foam one of my F2s. So, the question is, do I send it out to NPS, or do I attempt to do the job myself? I have seen kits for sale on eBay and have contemplated picking one up and having a go at it. However, being mechanically declined (one of the reason I buy things that don't break like my my F2s, my M6s and my beloved 500cms), I am hesitant. How difficult is the job? How risky is it? Thoughts on this ....?