I was planning on buying a Fastrak 20/52 very soon. Can you confirm for me that the flex forks are now available for this unit? If I get a seat spring kit, is it really necessary to get the lever extensions.? What exaclty is the air blow out kit... what does it do?? When I order this I want the following attachments.. Can you attach the correct part numbers to assure I order the right parts please: Seat Spring Kit Flex Forks Mulch Kit Thanks for the help.