I bought seals from LMC Truck. All of the door and window seals in one kit. The window seals were great, the door seals were too thick to allow the door to shut easily. The passenger door is close enough, but I had to grind a 1/16" off the striker/latch on the drivers door. With the striker/latch pieces adjusted all the way out, I can get both doors to latch with a firm slam. I hope in time the rubber will compress and take a set.
Always something new to deal with on this project. I've just had to remove the electric wiper conversion because the arms bind the motor and blow the fuze. Any threads on that problem?
When I got my 56, it came with a few bits and pieces. It had 2 door seals I had to fit. Unfortunately they were for the same door, passenger side. Fitted one up and it was great, door closes perfectly, no need to slam at all. Having read posts like this, I had heard of Midfifty hollow seal, so I bought one 2 weeks ago for my driver's door.
At first I had to slam it to shut it, but now it takes just a firm close. It will be interesting to see if it gets as good as the other door. Unfortunately the seals I got when I bought the 56 were not in a packet, so I do not know what brand they are but the one I fitted was great straight away. So someone out there makes good ones, just no one seems to know who. The Mid fifty ones seem like they will be alright, but no help to you unfortunately with your F1.
I just ordered the set from MACS but it will be a looooong time before I can see how they fit.
I also ordered a set for my 49 from Macs. They were the solid type and I am not happy with them at all. The door is held out about an 1/8 of an inch all the way around. Makes it look like the door is open. I even tried using a rachet strap to pull the door shut for 2 weeks hoping the seal would form to the door but no luck. I was looking at the soft seal set next so I will be following this thread.