Believe me, no criticism was intended. $15 seems entirely reasonable. But...

My point is really that I'm gobsmacked that an RTI representative does not participate in this forum on a damage limitation exercise. An apology wouldnt go a miss for a start and a promise that the forthcoming models address the RF issues.

The obvious question is why shouldnt RTI be made to take back all the IRF6s they've sold and put right what shouldnt need putting right.

Has anyone installed an IRF6 that didnt need a modification to operate reliably ? This is a serious question.

The truth is that your modifications are not an after market enhancement but a fix. Again this is not a criticism aimed at you but most definitely at RTI.