Can I attempt to untangle those two posts. Firstly are you considering acquiring a pump to reset the ride hight to their recommend settings?
Having pumped up the car to the measured hight you intended to run it, possibly over summer & have the spheres reworked next winter. Is that a fair assessment, because only if all of your spheres are holding the same amount & an acceptable amount of gas will you achieve that. That would be nice but rare.
I would like one of the more learned members to consider & comment on my next thought. If the suspension is far from tip top & Len pumps more fluid than the system would happily cope, would the harshness of the ride, especially over out wonderful roads, compromise the welding around the shock absorbers turrets & associated metalwork.
The race prepared Cup cars had all those mounting points reenforced, indeed there could be members here present with supplementary ironmongery on their cars.
An MGf owner needs a good working knowledge of how the hydragas system works, what to look for, an eye to notice any sag, a container of fluid, a pump up to the job of pumping the system to the correct pressure & a knowledge of how to put it all together safely. You will be playing with the best part of 250psi & if that squirts into your eye it might be more than a new pair of glass you will require. If you don’t have the knowledge or the kit you’ll have to get someone, like Jon & Claire at Rough Luck Racing to attend to it.
Have you been on the internet to see whether there are any for sale. Buy a set of good ones to fit & have some fun now, have your old ones reworked & sell those on to recoup at least some of the costs.
These aren’t instructions but comments to ponder, you have had a near do recently, please don’t have another because of a wayward suspension set up.