2 corrections:

\&r\ as ur and er in further [ɝː], [ɚ] (stressed/unstressed r-coloured vowels; worry = [ˈwɝːiː])

(i) As above, for those Americans who do not make (i.e. those who do make it) any distinction between the two, what is customarily transcribed as /ɝ(ː)/ can occur in both stressed ('curve' /$ kɝv, £ kɜːv/) and unstressed ('excerpt' /$ˈɛksɝpt, £ˈɛksɜːpt/) positions. Again, I think IPA [ɚ] would be an adequate match for W's "&r".

(\l\ as l in lot [l] (pronounced as ‘dark’ [ɫ], except when followed by [j]; syllabic in bottle, whistle) (underlining is mine)
For many Americans /l/ is "dark" in all positions. I will never forget my first American teacher pronouncing 'volume' [ˈvɑɫjum] with a 100% valorized velarised /l/.
It should be velarised, of course — stupid spell-checkers.

Sorry for these.

Mitko