Running chains on zipties

[bardd]

We have a little problem with our robot: since we have a gap in the frame, we added a support beneath the robot, connected to buth inner and outer c-channels on both sides (we have a kitbot drive). Up to this point everything is pretty with unicorns and sunshines.
The problem is it's now passing between two wheels connected by a chain. The chain is a bit loose and brushes against the support. We don't have enough room for an AM tensioner (http://www.andymark.com/product-p/am-0286.htm), and we couldn't find anything small enough to fit yet strong enough not to break.
I thought of wrapping a bunch of zipties on the support, parallel to the chain's movement direction and have it run on them.
Questions are two:

1. Will it work? (Sub questions: how well? Will the zipties give? Will it preserve more energy than letting it run on the support? What would harm the chain more? etc.)
   
2. Got any better ideas? We would very much appreciate some.

The chains are #35 series and the support is an aluminium square profile.

BTW, feel free to discuss a theoretical, unrelated secnario of chains running on zipties