Bill Lear must have had “little man syndrome”. It’s the only explanation I can think of for why you can’t fit in his aeroplanes if you’re over about 5’5.
Flew the LR35, regularly on 4+ hour legs, am 6’4, not sure how my back or a$$ survived. Most of my colleagues were average height, I don’t think any of them moved the seat forward off the bulkhead.