Forward seatpost vs Thompson straight post

Dave,
Thanks for the input. I had taped the seat rails in front of the seat post clamp. The post clamp is definitely more forward . I put the seat back on with the tape in front of the clamp, so it is more forward without even sliding it yet.
I’ll rise the seat some.
Any thoughts on my knees hitting the aerobars? Maybe the seat raising will take care of it.
I just watched a Youtube video on aeroposition and I thought my elbows were supposed to be under my shoulders in a straight line, yet the video said the humerus is supposed to be inline with the forks! His elbows weren’t even close to the knees that way. I’m confused.