How wide is the gap? Can you shim it w/ boards or something?
I saw a system that some college kids in Japan were testing - nonslip cloth laid under the magts, then that were wrapped around foam blocks snug against the mats, then the tail of the nonslip mat went back under the mats. So the weight of the mats kept the foam blocks in place and the blocks kept the mats together.
Hard to show here but like this
-------- mats mats mats..........
[foam]--------------
---------------------- - non-skid cloth wrapped around the foam
_floor_floor_floor_floor_floor_floor_floor_floor_floor_floor_floor_floor
Lance Gatling ガトリング
Tokyo 東京
Long as we're making up titles, call me 'The Duke of Earl'