I just received 6 CDs from the Feds for Cruisairs. I am gathering paperwork so my IA can re-construct my logs that were lost in a fire a while back. I have been aware of factory service kits for a long time, but never could get any information on them. I once saw a list of S.K.s up to number 15, but I had seen an S.K.#18 which was putting a 14-19 aux tank behind the Cruisair seat. I have just discovered from reading CDs that there was an S.K. for Cleveland Brakes for a Cruisair and an S.K. to convert the landing gear on a 14-13-2 and make the plane a 14-13-3. When I called the factory about the aux tank S.K. (many years ago) they were not interested in helping. I wonder if the information might be at the Smithsonian or even buried at the Bellanca factory, being ignored. A friend of mine went through hell trying to get Clevelands approved for his Cruisair, not knowing that the factory had approved them decades ago. Information on the Clevelands is on the CD for N74414. It says Cleveland wheel and brake kit #199-0600 as per Bellanca Drawing no S.K.234-4011 and manufacters Instruction. It feels like we are always having to re-invent the wheel. Sorry for the rant. ____Grant.