Slid the stabilator spar bars (KPHS0044) into place and temporarily secured them with double-sided tape. I only used 4 small pieces of double-sided tape (about 1/2" square). Two pieces were used on one spar bar and two pieces were used on the other. I placed the tape near the ends of the spar bars. Also verified that the rounded edge of the spar bars fit against the inside curve of the main spar.