I recently got my Xigmatek S1283 CPU cooler and was wondering how to apply Arctic MX-2 to it. As the surface is like this

should I apply the 3 lines of mx-2 on the Copper heatpipes or should I just apply it the normal way i.e. a small amount on the centre.
Also a small amount of Stock goop came with the heatsink should I apply that or is MX-2 preferable.
Thanks

should I apply the 3 lines of mx-2 on the Copper heatpipes or should I just apply it the normal way i.e. a small amount on the centre.
Also a small amount of Stock goop came with the heatsink should I apply that or is MX-2 preferable.
Thanks