Xplornet on Viasat 1 KA band help with aligning

I have a dish at our cottage in northern Ontario. We have had it for about 10 years, works pretty good! The building it is attached to seems to have shifted slightly during some construction. I need to re-aim the dish. The cost of API's on ebay are practically free, and the cost of bringing in a tech with a 2 hour drive and 45 minute boat ride is expensive. I would be happy to bring in a tech, but it seems like doing the aiming is manageable. Thoughts? Thanks!