Biscotti and 7135 questions

I thought I heard that some of the Convoy biscotti lights LVP was questionable at one point? Is that true or is the LVP solid?

Also I was wondering if anybody has had success removing a 7135 chip from their driver? I have a S2+ with 7135x8 and SST-20. Looking to see greater than 60min runtime without over heating (using quality cells). Could potentially set it to 50% mode but I believe I saw a test somewhere that 7135x6 100% is more efficient?