beam to hang roof off

hello ,I have a rancher with a 4-12 pitch roof.the span of the trusses is 30 ft.my roof trusses are spaced on 16"centres.I think a previos owner has removed a bearing wall,and hung 9 trusses (not flush)with joist hangers(about 12.5 ft)off 2-2x8s from the outside wall in ,and down 3-2x6s to the fire place footing. this beam is also mid span of the trusses. the roof is sagging a bit. would I be able to replace it with 3-2x12 beam .I read a span chart that said at 20 LL, 3-2x12s will span 13.2 ft,I am not quite sure if my little roof fits that category.I have it lifted with a temp wall right now,and am trying to find an answer.one 2x at a time through access ,and will assemble in attic. a lam beam will not fit,and the siding is pretty new.I don't want to put an exposed beam in,it would mess up a realy nice kitchen. any help would be great .THNX all

 

well tomorow I remove my old beam ,and replace it with the 2x12s.I guess my little problem is a stumper. next time I have a ? I will give a little more time for a response .I am quite sure this will work,I was just hopping someone would confirm .if ya dont here back from me asume the worst

 

kle 03,

If you get this in time send me an e-mail with your e-mail address. I would like a sketch of what you are proposing to do then I can help. The description that you mentioned is somewhat confusing but I can help. I'm around most of the day.

Let me know!