Job: Map Fixing

I need my map fixed, it has quite alot of issues, that should be easily fixed by somebody a bit more skilled than me, here are the main issues:

8x: Warning: FindPortalSide: Couldn't find a good match for which brush to assign to a portal near (11264.0 6656.0 -4240.0) 

   2x: Warning: Brush 5073140: areaportal brush doesn't touch two areas 

41x: Warning: WARNING: Too many light styles on a face at (3825.958984, 7909.000000, 415.800049) 

   1x: Error: **** leaked **** 

   1x: Error: Entity prop_static (1238.00 4688.00 260.00) leaked!

Hopefully somebody who has a bit more skill in hammer can help out.