Thanks all.
Yes Andy, the stencils are there, but the small frame numbers, 1 to 18, along the lower fuselage are not present in photos of this particular aircraft, and others of the unit. I've checked close-up shots of the nose of 'standard' Bf110s in this earlier scheme, and most (but not all) don't show the numbers either, although they are clearly visible on the later, mottled scheme. The numbers along the line of the belly tank joint, if present, would be covered by the fairing anyway, so I'll definitely omit those, but I might apply those aft of the wing - if I'm able to handle and position them.
However, that's a minor point compared to the rather large spherical object I've dropped - I got the unit code letter spacing wrong (the 'M8'), and the camouflage pattern !!
I worked from profiles and other photos of this unit's aircraft, and plans of the splinter camouflage pattern, spacing the code letters accordingly, but totally forgot to check the reference pics of W.Nr.3155 !!!!
Close examination of pics of the subject show what is at least a partial 'mirror image' camouflage pattern, at least on the starboard fuselage, and the 'M8' is closer to the fuselage cross, with the characters closer together too - b*gger, too late now !
Anyway, I'm about one third of the way through applying the stencils etc, with the fuel and oil triangles in place, and some of the other stencils. I'll very likely omit some of the smaller stencils, mainly those in red, as they just disappear against the dark background of the RLM 70. Some have already been applied, but they can't be seen, even by the camera., and I don't think it's worth the effort, fiddling, and time, trying to place them all.
The pics below show some of those that can be seen, with the trim tab warning and rudder gust lock markings, some of the larger, red stencils, only just visible.
The shiny blemish at the base of the 'M' is a stencil block for the lifting hole, and the Werke nummer was made up from individual characters from a 1/72nd scale RAF letters and number sheet. The 'lumps and bumps' seen in some of the pics are dust residue from the tissue used to tamp-down the decals, most of which were still settling when photographed.
Still half a shed load of decals to go, so I doubt I'll get them all done before next year !