However, the inconsistency of some ranks of pipes was becoming clear, due to their successive additions and un-sympathetic restorations. The noisy action was also distracting. In the course of these years, more voicing problems arose. A comprehensive restoration was carried out from 2015 to 2017 by the Wegscheider workshop, according to strict conservation principles and in light of the latest research, on the initiative of the organist Hilger Kespohl. During this time, the case-work remained in the church, where it was slightly straightened out and stabilized. The restoration of the organ case, as well as the uncovering and restoration of the original colouration, was carried out by the Wellmer Restorations studio from Himbergen-Groß Thondorf in 2015–17. Investigation of the organ's interior found that more original material had survived than previously suspected: many parts of the mechanism, and many pipes, were old but no longer in their original places. All pipes later than Schnitger's were replaced, especially the mixtures and the reeds – a total of 1,301 pipes. Schnitger's wind-chests survived, as did the tracker mechanism of the Oberwerk, while Wegscheider reconstructed the Rückpositiv and pedal actions. Wilhelmy's keyboards (c. 1800) were retained, including his shove-coupler. Wind pressure tests shewed best results with the relatively high pressure of 84 mm. The 3-rank Cimbel is a fourth-sixth-cimbel, as described by Michael Praetorius in his Organographia (1619). In 2014 a Federal Subsidy was approved from German public funds of 300,000 euros toward the total renovation costs of about 850,000 euros. In January 2017 the current colouring was completed, based on mahogany, replacing the previous green and red faux-marble scheme. The newly designed, modified meantone temperament is similar to that of the organ of St. Ludgeri in Norden; as at Norden, it is similarly free of wolf fifths. Neuenfelde's tuning is based on six fifths each narrowed by 1/5 Pythagorean comma to F, C, G, A, E and B. The fifth D - A and the four remaining fifths are pure; D# - B♭ is widened by around 1/5 comma. The re-inauguration of the organ took place on 12 June 2017 by Bishop Kirsten Fehrs.