Finding it difficult to select gears 1,3 and 5 on my ford transit?

Hi recently brought a 2002 ford transit semi high lwb 2000cc fwd with 116000 on the clock.After two hundred miles starter became constantly engaged/faulty.Problem being clutch worn out and dust getting into starter causing fault with what was apparently a new starter!New clutch and starter was fitted not a new fly wheel as apparently is not a dual mass fly wheel and doesnt need replacing,i am not a mecanic so not sure?!After the work was done the van seemed to have a heavy wobble in cab,steering wheel and peddels especialy when excelerating around 30 to 50?To top it off am finding it increasingly difficult to go into 1st,3rd and 5th gear as it all feels quite loose and never sure if you are in gear when releasing clutch like when pulling away in first in might crunch or popout as wasnt quite properly in.Im aware its done a few miles but any ideas or advice would be most helpful!!!
Kind regards Mark