The TS fired for the first time today after many years of restoration. It was wonderful!!! However, after spending some time fettling and putting the belt back on, the motor was very tight as you turned the flywheel, a lot tighter than at the start. No oil is leaking on the floor, but it looks like the drip feed is working. We changed from Shelsey medium to light as it didn't seem to want to go through the pump. Should I change the oil to a lighter grade again or is something more sinister happening. I refrained from taking it for a ride sadly, in case the I would seize the motor, as I'm worried it's not being lubricated enough.