packersfan
It's strange that part would be missing. Did you contact the person you got the blower from to see if he still has it?
These blowers are plentiful so you just need to find someone parting one out. Look through ebay for anyone selling skid shoes, or crank handles and email them.
Try joe's outdoor power, sonnys, bolensboneyard. Maybe Rick could find you one. Did you look at the list in parts suppliers?
You might come out cheaper buying another blower. The 32" is kinda small. You could get a 36" for around $100. If your 32" is in good shape otherwise, look for another cheap 32 and use it for parts.