Tilting the backrest can give you more legroom
Ok,
I'm sitting here scratching my head a bit and moving around on the chair a little trying to work this one out - but I'm not sure I can

I don't mean to question you on this (then again perhaps I do

) but exactly how, will tilting the "Backrest" of your seat give you more leg room????? if your rear end is still in the same position on the seat cussion, I'm not quite sure how the space your legs reside in changes, unless you're now positioning your rear end somewhere half way up the backrest...... somehow...maybe

Cheers