I recently reconed a pair of LE14A (same kit as LE14H, other than voice coil, essentially), and managed to duplicate the original T/S parameters for the woofer, pretty much exactly. It did require the creation of a "mass ring", ala the 2235H and such (a practice that JBL themselves has used interchangeably with the Aquaplas coating, in several models, including the 2231A, 128H, 122A and such). Given that, I'd strongly believe that the LE14H-1 could be dealt with that way, just as well.
Regards,
Gordon.