Soooo, good news is, the borescope shows that the ducts are clean/clear of any blockages.....the bad news is, the borescope helped me see that the front 15K A/C unit has in fact partially lost its seals and a lot of the forced air is simply recirculating back through the intake instead of being forced into the ducts. The coil also froze up very nicely, I suspect either from a bad freeze sensor, or from the fact that the cold air was directly circulating back through the coils. Headed to Lowe's in a few minutes to get some aluminized duct tape and reseal everything.....then keep a check on it.......
Sorry no pictures...nothing to show.... BUT....... More to come once I seal it back up.....