Changing One's Approach solution
by Kegler

As indicated by the shaded diagonal, SHIFTING GEARS, eleven entries require the addition of the letters G-E-A-R-S in some order.

Changing One's Approach solution grid

Across
1{SERAG}LIOn
6PU + PP + Y (UP rev)
9P + HONE
10ERASURES (hidden)
12VI + N{EGARS}
13DENT (hidden)
14AIRFRAME (A FIREARM anag)
16S + LOW
19DISA(R)M (MAIDS anag)
21LUSH (2 defs)
22I(ON)S
24TAN (2 defs)
25VIA + ND
27GELS (LEGS anag)
28DI{SREGA}R + D
30NET (even letters)
31CO{RSAGE}
33ET + A
34TR(AU + MAT)A (ART rev)
36REBAG (BARGE anag)
38B(EW)ARE (WE rev)
39ENL{ARGES} (LEN anag)
40EEL (LEE rev)
41{GREAS}E MONKEYS (NOSY, MEEK anag)
Down
1S(P)LASH
2ROIl
3GEE + R
4LEG + A + L
5OARED ("'OR'ED" hom)
6P + SST
7P{RESAG}ED
8P(vENUe)RY
11STaY
12V + ILL{AGERS}
13DI{SAGRE}E
15ROUND TABLE (LOUD BANTER anag)
17T + HIS
18B + ONES
20MASS{AGERS}
23{SEAGR}EEN (NEE rev)
24TEN + T,P + EG
25VI + CU + NA
26A + R + RANGE
29S + TARRY
32O + MARS
35TEEM (MEET rev)
37B + ALE

Solution