Hi, Rusty!
Well do I know that perpetual feeling of chasing one's tail...... simply because one has gotten behind times!
So well done on finally reading your paper!
I too had trouble with 4d for a time .... I did not see that it was an anagram of "started" around "o".
I still cannot see 13a though?
I have "rehearse" = "to run through" (def) but cannot parse the rest?
And the remaining one that I cannot parse is 8d......
"Clean room" would appear to be an instruction to a teenager, but where does the "chip- maker" fit in?
I am at a complete loss with this?
Any help appreciated, please!