Cryptic crossword

Across

3 Toothy enthusiast going to grievous extremes (5) 8 A coating (of eggs?) (5) 10 That Spaniard Norma's mixed up with (5) 11 The height of rhetoric (3) 12 Plagiarise tales? (5) 13 Being stuck up isn't exactly naughty (7) 15 Insure for a lot too much (5) 18 Spoil a letter to mum (3) 19 Various ways to blend tea with special body (6) 21 In NATO's disarray, they aren't all united (7) 22 That crafty manner of mine (4) 23 Such engines can be used in a process for ore (4) 24 Resort, possibly, to be seen in a poster (7) 26 In the cold, move rapidly (but not far) (6) 29 It's a hole, but a driver might stop there (3) 31 Damaged a key part in the cargo compartment (5) 32 Though not altruistic, Les backs a swimmer (7) 34 In the altogether natural condition (5) 35 Circle of French poetry (3) 36 One knocked out with a club? (5) 37 Criminal deception of an artist in a bit of a fuddle (5) 38 Mary could be mistaken for being tipsy (5)

Down

1 Part of S Africa with two names (5) 2 Ingrid's initial letter requiring German translation (7) 4 Such types can also be crafty (4) 5 A woman's high spirits (6) 6 Perhaps also on the way to the hairdresser's (5) 7 Desire to take a customer to the West End (5) 9 One among many, outwardly (3) 12 He may either be out of get out (7) 14 Derby, perhaps (3) 16 Servant who can provide his own beer (5) 17 Do something unoriginal in the garden shed (5) 19 Being broke, spoke peevishly (7) 20 Accident causing mass destruction at Holyhead (5) 21 Liven up in Shute's style (5) 23 A mobile is a moving one (3,4) 24 Seated, suitably sober (6) 25 The poilu's hair dressing? (3) 27 Buzz off – you don't need both legs! (3,2) 28 Figures out one is upset by poison (5) 30 Employ a hearty couple until exhausted (3,2) 32 Over him is the supervisor (4) 33 She needs aid terribly! (3)