I had the sacrificial white UV panels on our 7 year old 150 genoa replaced due to deterioration of the fabric and thread along the luff seam and failure of the webbing which secured the sheet ring to the clew. Upon deploying the sail for the first time yesterday, to my suprise, the new material (blue Sunbrella) had been sewn OVER the old. I expected that the old panels would first have been removed but it didn't occur to me to discuss this with the sailmaker prior to giving him the go-ahead. I'm concerned that the additional weight along the luff and foot will effect sail performance in light air, although I didn't notice any depreciable difference yesterday in 10-15 kt winds. We are primarily cruisers but do race occasionally. What say you?