I can relate bro, Im straight up orthodox. Was in the ring with two Southpaws the last night, slick as can be, tried boxing them the first three rounds and the just popped me with their irratating jabs. Lst rounds i broke through and gave them hell, sparring them again tonight and i no its only sparring but im gonna start of heated.

I think you may adopt the same approach. I no when i get in the ring not to be the aggresor i get outboxed as i don't impose enough, When i do go in willing to dominate i usually do, but you gotta maintain a balance between intent and logic.
So next time u go in and spar, go in with the intent to beat him, let him have to live upto u.