^ We are with you. The pictures you showed earlier about the clamp arrangement is out of this world.
The position for you on this bike is going to be so crucial. Using a pre-existing indent for the former rider with the former rider's saddle needs to be dismissed IMHO. It's your bike now. You are the owner and rider now. I agree with Keith, there needs to be a way to get you in a less cramped position. Have faith that us humans have not physically evolved so much in 100 years , and some where there is a sweet spot amongst this. We know already Monarch were doing something right.
The position for you on this bike is going to be so crucial. Using a pre-existing indent for the former rider with the former rider's saddle needs to be dismissed IMHO. It's your bike now. You are the owner and rider now. I agree with Keith, there needs to be a way to get you in a less cramped position. Have faith that us humans have not physically evolved so much in 100 years , and some where there is a sweet spot amongst this. We know already Monarch were doing something right.