Which chess mentor course is the best for bringing up your positional play? This is the part of my game that i need to work on. I was looking at Silmans lessons in strategy 1 and 2 or roots of positional understanding, any one want to make a suggestion?

Roots of positional understanding.  Heck, you have a diamond so do them all!  You'll find that most games at club level are decided by tactics.

i know they are decided by tactics which is why my main focus is tactics, my tactics trainer rating is 2339 and i use other tactics software and sites. I find now that i play better players expert and above my positional play is  killing me as combinations arent presenting themselves as they do in lower level games as these players do not make as serious tactical errors and avoid weaknesses.

Understood.  I am just like you in that regard.  Exact same tactics trainer rating.  Have you gotten some of Silman's books?  Those could really help you.  If you already have, then you could always work some on your endings.  That's ALWAYS useful.

no i have no books on position or strategy, plenty on tactics puzzles tho lol. i have a book on endgames, one endgame puzzle book and openings for black book. idk which book i would get for positional play, but i see chess mentor ha some stuff for it, maybe i will try roots of positional understanding. which book as helped your positional play

Get the Amateur's Mind by Silman and Reassess your Chess by Silman.  Those will give you an excellent foundation on planning and positional play. 

I am currently reading 'Reassess Your chess' and I think it is a great book.

Any of the positional courses by Silman are the best.  I would start with Roots of Positional Understanding because the solutions are generally just a one move answer so you can go through them quickly.  Then I would hit Silman Strategy I and II.  For the most comprehensive positional backgroud, read Silman's The Amateur's Mind first, then hit the Chess Mentor courses I mentioned.