King Blackfoot 50520 cva shocks advice needed

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Hello everyone after building and owning midnight pumpkin/ king blackfoot/ super clod buster/ txt-1 and often checking this forum out i decided it was about time to join! Recently i bought myself a 50520 cva short shock unit set ii as i would like to upgrade the standard front suspension i have on my beloved king blackfoot. My issue with the front suspension is the well known problem of toe in as some people call it i.e push down on the bonnet and suspension doesnt travel properly due to poor design.

Tamiya recommends 94mm for cva front shocks same length as the standard ones would fitting shorter cva's on the front improve the movement of the shocks on the front? Im trying to decide between 84mm/ 87mm/ 91mm or 94mm which should i go for? Has anyone on here experience of putting shorter shocks on the front of kbf? I would be very grateful for any help or advice.