All of the recent RTR O gauge locomotives will manage Lima points and curved track (somewhat surprisingly). The Ixion Hudswell-Clarke and Dapol Terrier will sometimes derail on track joins if they aren't perfectly aligned. Also surprisingly (for me at least, based on previous attempts at combining 3-link couplings with sharp curve radii in 4mm scale) I've had no problems either pulling or propelling rolling stock (up to a 6-wheel coach in length, not tried bogie stock) around Lima curves, though when propelling it helps if all the stock has sprung buffers! I've never posted on RMWeb before but I may post some photos of my layout at some point - it's a minimum-space "tailchaser" with a pre-war light railway setting, the baseboard is in 2 sections so it can be stored in a space about 3x6ft when not being run. I used Lima curves for the main circuit, two of the three points are scratchbuilt ones acquired second-hand but the third (in the station goods yard) is a Lima one, like you I cut it down at both ends and removed the bulky switch mechanism (it's now operated by a GEM manual point lever)