well, i see dots below too. interveinal chlorosis in new growth up top.
K tox?
P tox?
if you've been bombing it with either and provide plenty of Mg or Ca (both have dots, Ca would be without interveinal chlorosis), i'd guess one of those.
if you've been conservative and you check lebals of what you fed and find soemthing lacking, go that route.
it's important to know what you feed / fed already.