Accurate to what: SRB2 design or classic Sonic design? I may be mistaken, and if so please correct me, but I was under the impression you were attempting to faithfully recreate the look of SRB2's 2D sprites in 3D (in contrast to Jeck Jim's model pack, which pivots more toward a Sega Saturn aesthetic).
Assuming NewObedBjs.2021's screenshot above is the latest version of your model pack, your "un-Mania-fied" 3D spring design is actually quite
inaccurate to SRB2's 2D sprites (see below). If anything, they more closely resemble spring sprites in Sonic 1-3, which look ever so slightly out of place in SRB2.
View attachment 54239
That said, the rest of your model pack is gorgeous and I can't wait for more player, enemy, boss, and object models.