Then I think we have found the 'problem'.
Two weeks in the bottle and all this will settle, gentle pour will give you clear beer.
I have no problem with kettle crap, this will settle in the fermenter and give you no problems.
How can you say you are underconverting or have a sparge problem when you have no idea what grains you have? If there are no base malts, which I suspect is true, you are not converting any starches. The conversion of cara and crystal malts was done by the maltster for you.
Cheers
Nige
PS. My number is freely available on the contacts page of my website, feel free to give me a call.