Running rough fleetwood cornado

Thanks everyone for all the help. When I bought it last week it had a quarter tank in it and I have since filled it to a little over 3/4 now. I have someone coming to change the fuel filter and do a pressure test on wendsday. The motor has the Tbi in it so if the filter dosent help then next is a Tbi rebuild and then injectors. Today I did start it and put it in reverse and moved it about 10' then back in forward just to try to move stuff around. It did seem to help a little. But not sure if it was that or the fact I have it about 90% throttle a few times and revved it way up. Last question. Does anyone know of a good mechanic in the Salt Lake City Utah area? I'm young but unfortunately I have kidney failure and can't do much due to weakness. All this has to be done by a mechanic. Thank you all!!