mech files - syringe carriage variable error - rounded box dimensions

[mklod]

When adjusting syringe diameter and plunger diameter for a 140mL syringe, the screw holes and relief for nuts disappear on the syringe carriage. Some syringes have a plunger diameter that is bigger than the syringe body diameter.

For instance,
d_plunger = 45.5; // diameter of the plunger end
d_syringe = 41.5; // diameter of the syringe body - sets size of syringe holder
d_plunger_max = 45.5; // this sets the spacing for screws on the plunger retainer and carriage

Thus, for module carriage_syringe_pump(), l1 does NOT equal cc_guides - d_guide_rod

l1 must be widened (I arbitrarily added 16)

i.e.,
l1 = cc_guides - d_guide_rod + 16

or better yet,
l1 = d_plunger_max + 12

The screw holes and relief for nuts then reappeared on the widened carriage body rounded box.