Ok .. interesting ..
First off .. have you fixed the carbon canister fault ? this will effect the readings .
Second you need to induce a fault .. say unplugging the maf sensor to generate a fault code.
When you clear a dme fault code it will reset the adaptions .. after this you do a r/t of approx 20 miles to get the true reading of what the engine is doing .
RKAT is mixture adaption at idle .. basically the injector duration is increased or decreased depending on what the lambda sensors see .. so a rich mixture and the injector for that cyl will open for a shorter period .. lean and the oposite ... the car will always try to maintain Lambda for each cyl .
Lambda = the correct fuel / air ratio for optimum performance + save the planet ... also called the stoichiometric ratio .
You may well know this stuff already but not everyone does
Your current figures ..
6.9 % is the max limit the car can adapt to , your figures are inside of that limit so the car is compensateing .
This is also only on idle .. the car is running fine when above idle .
B1 is a slightly rich mixture .. its acceptable imho .
B2 has a air leak , its minor but its still an air leak .. the car can easily compensate for this so no real action is needed but if you wanted to then you would smoke test the inlet mainifold .. or at least i would .
There is nothing listed that would indicate a hesitation .. soo ..
The next step would to be to look at misfires .. you may need to drive the car and log these .. i think the durametric can do this .
I would also want to graph the pre cat sensors both sides and graph them on a run .. again im pretty sure the durametric can do this .
This would be the next step and posting the pictures will help .. remote diagnosis isnt easy
I will say .. if this is new kit to you then have a play .. look at what you can then ask questions .
Fault code off hand indicates an old tired cat .. it wont effect performance .. unless its damaged but its save the planet stuff ..
Its always worth bearing in mind though .. a partially blocked cat will have an impact on peformance .