fabia front brakes messed up

hi

i replaced the hub and the shock absorber due to a bearing problem. i went and got the whole thing from a scrap yard and installed the thing on my car.

the majority installation went on very smoothly and no major problems.

however, when i started to assemble the brakes i found a problem. on the brake hub thingy there are two screws that keep it in place.

the bottom place where you screw in the nut (im not sure what it is actually called) was fine but when i started to screw in the top part the 'nut' would not go in the entire way. the place where the nut goes in has been eaten away and it wont let me screw the nut in. (sorry this is not the best explanation)

so i improvised and used another screw from my tool box and forced it in so it would do the job of the original (done cos i needed the car at the time) by holding the brake hub in place.

but the brakes feel weir now and im not sure what to do.

will that be a problem?

are there any ways of fixing it so the original can go in again?

what the should i do?

ps am a student and thus no money to go and let the processionals do it.

any help will be appreciated.

the top bolt hole is corroded and/or damaged thats why i could not get the original nut fully in. the brakes do work but when i braked at 40mph the steering went a bit to the the left ( the right side has the problem).

that hub was the last one there. i spent £70 for that damn thing and they dont do returns and i spent 4 hrs changing the damn thing.

there has to be a way on fixing bolt hole without changing the entire thing.

ps thank you for the reply i honestly appreciate it.