drag chain upgrade

i very much like this drag chain but i wanted greater durability and resistance to back bending. so. this remix increases the side panel part by 2mm. the increase has minimal impact on print time and cost but makes the chain MUCH more durable and reduces the "wrong" bend potential a lot.

i have given the file names color and inside / outside labels.

white = outside = cross-bar on the outside of the bend.
black = inside = cross-bar on the inside of the bend.

i highly recommend different colors for the pieces, since it is hard to tell them apart.

i printed as follows:
ABS
260 / 120
no supports.

this remix was done in such a way as to maintain full compatibility with the prior design. so that i could freely inter-mix the older and newer designs with no penalties.

picture is of a mixed chain = old and new, interlinked and functional

Edit june 13, 2020
removed 2 small projections that reduce the inside space of the chain yet add no functionality. these 2 small