Injora IR40(TRX4M) adding rear axle 12gr. weights. Will it improve crawling?

In this small experiment, I tried to lower the weight of the rear Axle by adding 12gr brass weight elements to each side. In result it actually made crawling abilities decreased. The details are in described in the video

[@bjddogg]

Thanks for the info. I like the course you built!

[@NorthSeaRC-ff9yn]

Appreciate for your comment!