DEG Inquiry 31042 addresses a question regarding blending tow cap covers.

“MOTOR has reviewed information from multiple sources and has concluded
that the current formula reflects an estimate for one particular scenario but
does not necessarily reflect the many variations encountered with modern
vehicle finished and design. Given the variations among scenarios today, we
believe MOTOR’s Estimated Work Time Development methodology should defer to the
judgement of an estimator or appraiser following an on-the-spot evaluation of
the specific vehicle and refinish requirements in question.”