FYI, I tried the gap seals from Wings & Wheels on my Legacy.  They consist of the curved mylar strips, a double-sticky tape for putting them on, and another tape layer over the leading edge.  The majority of the seals I applied departed the aircraft in the first flight or two!  Seems the glider stickum isn't up to the airspeeds of the Legacy.  And no, I didn't notice any difference in control forces with or without them present.  [They stayed put on an earlier ES that I built.]

Jim Cameron
Legacy N132X
Boerne Stage Airfield, TX