Thanks all for the feedback, as always, appreciated. Been on holiday so this is my first opportunity to respond.
@smillington - the kick was constructed using two kick samples layered, one with more high end content and then EQ'd to take out any lower or mid frequencies and one providing the lower end and visa versa on the EQ. The pop though is probably more down to the compression applied. I have a preset compressor that I have over the whole drum rack and tweak it to help make the drums pop out like that.
I agree with you and @robjones on the dissonance. This started to appear when I introduced the arp synth more than anything and as you say Rob is probably the more noticeable and irritating issues that needs fixing. Your guidance on this is much appreciated as I found my self not knowing how to fix it! Music theory is something I am still working on and probably where more work is needed for me. I find arrangement and mixing quite natural, but as my tracks become more complex and I start to create my own parts more, this is certainly something I will work on! I will see what I can do to correct this and hopefully not lose what I was going for. I am more comfortable with the issue you noted at 3:00.
@samuelclouston - thank you for the feedback, glad you like the work!