The members here are very helpful http://www.cb1100 f.net/
Brian B. replied:
Mack & Cliff, I forgot to mention something important. For quite a while the guys at DOHC Customs (many all also frequent the CB100F site) and the Yahoo group for CB900C/CB1000C have had a special rate for Nitrile type valve seals and stronger replacement cam cap bolts for all the old DOHC Hondas. Both are well worth the money. Contact genesound@usa dot net Also ask Gene about his valve seal install trick, using a valve stem and a socket, great stuff.