Summary

Here's an attachment to improve the ergonomics of the P90.
Hopefully it will decrease your wrist strain, but I understand each body is different and might not work for you.

Use double sided tape on the back, to stick to the P90 grip, and velcro strap to keep it in place.

If you need to widen the grip attachment, so it fits better, don't forget you can boil PLA and then press it against the p90 grip to deform it

Print Settings

Printer Brand:

Creality

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>CR10S PRO</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>0.75</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>10%</p></div></p>                                                    <strong>Filament:</strong> Eryone PLA                    <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>I used a 1mm nozzle to speed up the print. Print it with the flat side down.</p></div>

P90 Grip Modification