Speedometer setup help needed

First step is a stop back at the transmission shop that did your install. You paid them for a job, they need to make it right. It's probably just a 5 minute job for them, provided they still have your old gear.
Thanks to everyone for your help and direction. Stopped back at tranny shop and they don't have the needed 37 tooth gear in stock....but are going to source me one. Thanks to all for input and responses.