gazzg

Hello all, i am new to this forum & own a rxs 100 1990 in red.i have a couple of questions, i recently had to remove my enginr block as i had a broken stud on exhaust port & would not budge for love nor money, the object of this execrcise was to remove my exhaust as it is blowing & needs welding,can someone tell me how do i torque up the engine block to crankcase bolts as you cannot get a torque wrench on them ? or will guessing with a spanner sufffice. Also can anyone tell me where can i obtain a colour match for the red paint on my tank,my local paint factor said they cannot help as it is a candy colour, i just want to touch up some bits especially around the petrol filler area as there is some surface rust.any advice appreciated, Thanks.