@LesterPiglet Sorry, I wrote that quickly while at work and didn't really think much on it. By felt, I was referring to these gaskets I see online that look like they are lined with some cloth material, maybe it's cotton? Looks kinda like pipe cleaner, but hard to tell.
Where can I score some of those copper crush gaskets? I can't seem to find any online that fit the CB350F. Would CB400 gaskets fit? I'd also like to only spend a few bucks per gasket here, if possible.
If it comes down to it, I'll just grab the aluminum ones. I was mostly just wondering if it made any real difference.
Thanks.