LOL I know that position well, the trick is to get yourself into the one 'sweet spot' where you can hold it for more than 10 seconds at a time whilst wiggling the caliper furiously.. Main brake pads are around but they are a lot more expensive than steering ones, circa £100. Try the usual places first, banisters, marcus glenn, xmod, or ebay. If the seals are mushy it could be that brake fluid was used by mistake, which will also destroy your mc seals, so test the fluid that comes out by smearing it on some paint to see if it removes it!
As the Haynes manual says installation is the reverse of removal but I guarantee you it will take twice as long to get it in right...
Good luck
Timbo