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11a Rubber substitude causing uncontrolable movement in
bearing 7 f??t??e
13a Fragments machine repairer has left inside 7 f??t??r
21d By ghe way more than half of strong drinks make
You slash 7 ??li?ue
Thanks for help

11 factice?
The definition seems OK, and it's TIC in FACE - not so happy about the latter being "bearing"

21 Oblique

13 flitter is L inside "fitter" or "machine repairer". Could it also mean "fragments?

21d OBLIQUE ?
most of liquer ... not sure about ob

Yes

def 3

https://www.dictionary.com/browse/flitter

Thanks mamya - new one on me!