Hi.
I feel that we offered you a reasonable offer. You purchased the radiator over 2 years ago so it is outside the 1 year warranty period by nearly 16 months.
If you had came to use with the problems within this first year we would have happily replaced the radiator for you, we have sold hundreds of these radiators and I can count the amount of failures we have had on one hand.
The offer for a discounted radiator is still open so if you do still need a replacement please let us know.
Regards
Rich