ProArt RTX 4080 Super inside Precision 3680

Hello-looking for some help. Installed the ASUS ProArt RTX 4080 Super inside the Precision 3680. I used this power cable -

12VHPWR 90 Degree Adapter to 2X 8Pin: 16AWG 16 PIN GPU Right Angle PCI-E 5.0 Extension for for Graphic Card GPU 12+4pin RTX 3090Ti 4070Ti 4080 4090 (Type B) from the big online store. I am currently using the Asus GPU support ‘screw’ to hold up the GPU but not sure if the support is adequate. The card is a SFF I think so the GPU holders from XPS 8950 don’t fit (card is not too tall for one of them and the space behind it and the cooling fan is too small to place the other GPU holder form a XPS 8950). THE GPU holders from a Precision 3660 also seems too big for the ProArt card.

Any suggestions for a suitable GPU holder for this arrangement?