This tape was a nightmare

No block 0 and bad block3 on tape, changed to UEF, converted back to WAV, loaded to block3 into beeb,
recorded block 3 from STH ssd, loaded that3 into beeb, then managed to get block 4 to 5 into beeb from RAW
on the original loader, this messed up line 160 (end block4), same as line 170 on STH ssd.
now sorted
