I normally try to move the sleepers on the plain/flexi track so that they interlace. If necessary cut the webbing under the track, so that you can slightly alter the spacing. The sleepers could be cut with a razor saw.
The long sleepers should really be used until normal sleepers would clear each other. I'd settle for straightening the last one of the point base, and modifying the first two on the bit of straight track. Then trimming those that overlap so that they fit each other.