Does anybody pay a pro to dial their system in?

Kota1, I’ve done exactly as you said and have the triangle dialed in. More to play with here, opening those wall curtains etc a bit so as not to deaden the sound too much, moving carpet etc etc. 

i have to fly tonight or tomorrow to the US so will not be dabbling for the next week. Looking forward to picking up a pair of 15’ speaker cables while I’m there as these 6’ cables aren’t giving me much flexibility. Luckily Benchmark have reasonably priced cables to do the job.

Once you have done the quick movements, and hopefully got some benefits. I will typically listen carefully for a couple weeks. Make next steps very slowly… with long intervals of listening so you can really detect the exact change in character of the sound.

If sound still confused move speakers closer to or further away from front wall and side walls.

Think about the soundstage, depth / width and then occasionally make another small move. If you have your triangle correct already, make moves in toe in.

There is a lot of advantages to learn how to do this yourself.

 I would also like to encourage you to put photos of your system  under your userID. It is really helpful. Often someone will describe the two or three things they think is the issue and it will be something completely different that was not brought up… but is identifiable in the photos.

No. 

Thanks GHDprentice. Yes, I’m doing all you recommended. I’m sure in the coming weeks I’ll get closer but I can’t help wondering if a second pair of experienced ears would help in case I’m not being realistic in what I’m hoping for. I’m at a point of thinking “does this sound horrible” (it does to me) but then again I haven’t had the luxury of time to really sit for long analytical sessions. 
One thing that is true that nobody has mentioned is the quality of the recordings I’m listening to with regards to mastering/engineering etc. I remember over a decade ago when I bought my first system I wasn’t able to listen to the majority of music I had liked previously as the system pointed out all the recording flaws.

i haven’t got around to setting up my new Bluesound Node yet and am working off a few CDs I have laying around and unfortunately I don’t have my usual “reference” tunes to guide me that I listen to from portable (great) headphones and headphone amp, that will tell me a lot once I get the Node up and running.

Even a modest set of headphones can sound really good. If you want your system to be better than your headphones, you'll have to buy some very expensive loudspeakers. Once you get sorted out, no headphone is going to match the loudspeaker sound you get but it might take some work and some bucks.