Although the QX3 microscope is solidly built and practically indestructible, we have found that several minor modifications greatly improve the overall performance of the microscope.
(the QX3 microscope; is solidly built; ) (we; have found; that several minor modifications greatly improve the overall performance of the microscope)
the QX3 microscope we
is solidly built have found
that several minor modifications greatly improve the overall performance of the microscope