This is probably not useful to you - it's just a listing of the episodes
I have on tape.

Tape 1
0:00	514 (minus opening)
0:20	515
0:41	516
1:10	517
1:40	518
2:09	313
2:40	301
3:10	304
3:40	309
4:09	312
4:40	318
5:10	321
5:40	401
6:09	502 (1 skit)

Tape 2
0:00	520
0:22	102
0:50	103
1:12	104
1:42	105
2:12	107
2:42	108
3:10	109
3:40	111
4:00	113
4:30	115
5:00	116
5:28	117


Tape 3
0:00	213
0:30	214
0:58	215
1:28	216
1:57	217
2:26	218
2:55	219
3:24	220
3:54	302 (few secs cut!)
4:20	303
4:48	305
5:16	306
5:45	307 (cut in last skit)

Tape 4
0:00	308
0:29	310
0:58	314
1:27	315
1:56	316
2:25	317
2:54	319
3:23	320
3:52	512
4:19	513 (clip last skit)
4:47	101
5:17	110
5:46	113 (minus last skit)

Tape 5
0:00	202
0:30	203
1:00	204
1:31	205
2:01	206
2:31	207
3:01	210
3:32	320
4:02	503
4:32	504
5:02	505
5:32	506 (4 skits)
5:44	516 (minus last skit)

Tape 6
0:00	303
0:33	305
1:04	403
1:33	404
2:02	408
2:32	409
2:51	410
3:20	411 (4 skits)
3:33	412
4:04	413
4:34	415
5:04	418
5:34	419
6:04	420 (2.5 skits)

Tape 7
0:00	106
0:29	112
0:59	118
1:28	202*
1:57	212
2:27	316*
2:58	208
3:28	213*

Missing:
114 119 120 201 209 211 311
402 405 406 407 414 416 417
501 507 508 509 510 511 519