Below are my comments on the last remaining open points after discussion with our internal engineering team We have agreed to approve PUR pads for Shore hardness 69A for this batch of frames only. Regarding the 2mm gap. This is generally a No Go. There are no gaps kept in welding in Lap joints. Root gaps are only kept in butt jointsHowever Since it is there in drawing and you have mentioned that you have used 182mm tube instead of 180mm and there is no gap there.You have also mentioned that arm can easily open/close and functional requirements are achieved easily. We are approving it for this batch of frames.From next manufacturing . please follow approved method (shown in below picture. Picture on the right showing one example showing step milling processKindly raise queries before manufacturing in future if you have any doubts