Excellent instructions, many thanks. Got the Tx created and signed correctly, however when I try to send transaction to network I am faced with the following error.
mandatory-script-verify-flag-failed (Signature must be zero for failed CHECK(MULTI)SIG operation
Any ideas?
Figured it out for anyone who's interested. Make sure you use the amounts of the original inputs when signing. I was using adjusted amounts to allow for fees, which was incorrect. Although it will sign correctly, the transaction cant be sent. The fees adjustment need only be taken into account when creating the transaction, not while signing it.