Hello, sorry for delayed response.
I always use stereo imaging tool. Ozone includes such stereo imaging, and Waves' doubler also. If you don't have such plugins, try very short delay(0.1ms - 1ms). It puts each elements center, or wider position. And the different width decides which element is most important.
In another point of view, I think some stereo FX are necessary in your tune. Just punning is very good, and stereo delay is also good.
All that I wrote are just my personal impression.
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